| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 131 |
23.1%
|
| 2 | no | 425 |
75.1%
|
| 3 | (dk) | 7 |
1.2%
|
| 4 | (ref) | 3 |
0.5%
|
| Sysmiss | 434 |